Make assertions not display message boxes to the end user. This is causing an infinite recursion of assertion messages during a painting error.
Make assertions not display message boxes to the end user. This is causing
an infinite recursion of assertion messages during a painting error.

BUG=4139
Review URL: http://codereview.chromium.org/9608

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@4844 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser